Becoz the UML tool that I am using doesn't seem to have all the shapes for UML 2.

By the way, I am using Gliffy as my modeling tool, it's online so I don't have to install anything. I just paid $5 per month subscription.

Thanks.

It is nowhere mentioned in the assignment that you require to submit the diagrams in UML 2.x and hence they can't reduce any marks for that.
Also, the exam objectives just say your diagrams should be UML compliant and nothing more than that.
And I don't think we need to follow the speculations from guides.
Whatever is mentioned in the assignment is the only thing we require to follow. If you had done fine with UML 1.x, I don't think there is any point in doing rework.
I too developed the assignment using star UML and component diagram is 1.x compliant.

To be on the safer side i would recommend going with UML 2.0.
I know where in the assignment - they talk about UML version-they just want to be UML compliant.
Mark Cade's book also has two version diagrams-1 and 2 and they talk about UML 2 instead.

If we go with UML 2-we can get better support as most of the current books in UML are for UML2 version.